You will now have a backup copy of the transaction log that you can move to another strorage device, and the original file will be truncated to the target size. Full recovery is recommended so that in the event of corruption or failure the database can be recovered to the very minute the database went down. Simple recovery will only allow you to recover the database to the last backup of the database.
Perform a checkpoint event in order for the log size to decrease you have to perform a checkpoint event, such as another full backup. JP83 great catch. Your comment is accurate, the model database is a template for all other databases. My intention was to simplify things by not talking about the model database, because the model database in SQL server is set to FULL recovery by default, but to be more accurate I made a change to the wording above to reflect the information in your comment.
I concur with Brent. As for only using diff recovery to pass an exam, I have had several examples where simple recovery is all that was needed, but a nightly full backup of a huge database was untenable.
Therefore weekly full and daily diffs did the trick! I count myself as not fully understanding good backup including restore of course and transaction log policy.
I have protested about that. But, is there not a way to use the data backed up in Step 3, plus the log? Well, never mind. Also, I stole the disk to make a point, but hard disks do just break. And you may be depending on someone who is much less invested in the process than you are, to put in the right tape for a backup at the right time.
I myself assumed that differential backup can only be done by backing up a full-recovery transaction log. Do you want me to use the blink tag? Have an audio soundtrack on the page with screams of terror?
The point of the post is to show how to provide dangerous information. If you absolutely have to provide dangerous information, do it with tons of warnings. And my point was you are using an undocumented feature of a third party product in a way it was never intended for and why it is in the product. Just wanted you to know, I found this stream of argument to be hilarious and petty, like an episode of Seinfeld.
I did once years ago in an emergency, but immediatly did a full backup. We did use truncate only regularly on dev databases to save space ususally after restoring from production. Usman — not easily, no.
I have only client operating system windows xp but i have sql server in that system ,so how to config the log shipping my system sql server to other system that is also client thats having sql server.
So I backup transaction logs several times daily, do a nightly backup, then on my weekly maintenance after the weekly complete backup and reindexing I truncate the log because the maintenance makes it so large before I start the weekly routine again.
Is there a better option? Brent — if you keep using the log space every week, why do you keep shrinking it? So, the conclusion or actual as assumed solution would be to set the recovery to simple, back to full and dbcc shrinkfile? The log disk is GB and its almost full. Fortunately, our server admin gave us 2 more gbs of space. One of my friends suggested me to do dettach thedata file and log file and move the log file to a new drive or disk followed by a full restore after the db backups.
What is your take on it? Mohammed — Correct. Without it I often found my db becoming overwhelmed by the large data moves we deal with. I have been working through a data warehouse staging system where we load, cleanse and transform data before moving to warehouse and analytic facts and dimensional objects.
When you need to load staging data, use a separate staging database and leave it in simple recovery mode. Let me give an example of what has really got me peeved!! I restored a copy of our production database onto a development server. When restoring the backup, the log file is 68GB in size. The log file is still 68GB in size. I have tried this method about ten times — the file is not shrinking. Thanks for all of the above.
However would anyone have an idea of how to shrink tempdb log files? I say this because one cannot run a backup on tempdb, full or simple. A current problem we are having is the tempdb log fulls up and crashes one of our import procedures when moving the data from staging to live.
Running on SQL server R2. Should I understand is so that when MSSQL server does a backup of the logfiles, it does truncate the files as part of the backup? We run a backup software on the server, backing up log files every 1 hour, and a full backup every night, but still the log files grow very big.
When SQL Server backs up the log files, it helps allow it to mark that portion of the log file as available to be re-used.
Whether or not all transactions have committed that were using that section fo the log also matters. One hour is a long time to go between log backups! Typically losing one hour of data is too much for a business. AlwaysON issues…. Can any body help me out here over the mobile. I found that if issue this command after a database backup it reduce the log size but it does not return the empty space back to the Windows as free space. It is possible to shrink log file without truncate option.
I need the script for shrink the log file without truncate. All the settings are verified and the application also working fine for a week. Then we noticed a problem with the log file Size Size is increasing and reached around 42 GB and not able to execute any of the basic query and everything break :.
Also please let me know if you need any other information. I am not sure why you say that its due to Azure.. I have gone through same issue. I used simple above solution and its working good for me. Hello Pinal Dave. Would you go out with me? I think your site is amazing. I have a huge poster of you hanging above my bed so I can gaze into your eyes while I str. I would like to know if there is any difference between shrink file through GUI and through script because, I scripted out the shrink file and executed and space was not reclaimed but then again I ran the shrinkfile through GUI and it worked helping me reclaiming a lot of space.
Note: This was a one time thing and the DB was in full recovery mode. He holds a Masters of Science degree and numerous database certifications. Pinal is an experienced and dedicated professional with a deep commitment to flawless customer service.
Nupur Dave is a social media enthusiast and an independent consultant. Add a comment. Active Oldest Votes. The Overflow Blog. Podcast Making Agile work for data science. Stack Gives Back Featured on Meta. New post summary designs on greatest hits now, everywhere else eventually. Linked
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